Home / 140,111.73-193,354.14-76,449.78

Finding the Fourth Proportional to 140,111.73, 193,354.14 and 76,449.78

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Solution

The fourth proportional to 140,111.73, 193,354.14 and 76,449.78 is: 105,500.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,111.73 : 193,354.14 = 76,449.78 : x
  2. Step 2: Convert to fraction form
    140,111.73/193,354.14 = 76,449.78/x
  3. Step 3: Cross multiply
    140,111.73x = 193,354.14 × 76,449.78
  4. Step 4: Simplify right side
    140,111.73x = 14,781,881,465.09
  5. Step 5: Solve for x
    x = 14,781,881,465.09/140,111.73
  6. Step 6: Final answer
    x = 105,500.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.